Effect of Dosing Vitamin E and Selenium Nanoparticles in Milk Yield for Holstein Cows

Abstract

The experiment was carried out at the cows Al-Khalis station in Habhab district in Diyala Governorate, during the period from 1-10/2022 to 1- 5 / 2023 using 16 Holstein multiparous cows from milk-producing cows raised at the station. The animals were divided into four treatments randomly in the last two months of pregnancy and were as follows: T1: four cows without dosing (control treatment). T2: four cows were vaccinated 3000 IU vitamin E/ cow per day. T3: three cows were harvested Nano selenium element in an amount of 5 mg / cow per day. T4: five cows were sprayed with a combination of vitamin E 3000 IU and Nano-selenium in an amount of 5 mg/ cow per day. Vitamin E is a Alpha-tocopherol acetate powder packed in capsules and dosed directly into the animal's mouth in an amount of IU / cow / day, as well as selenium nanowires weighing each mg of it and packed in a capsule and dosed to cows once a day in the morning (5 mg/cow/Day). Treatment T2 vitamin E dosage in the sixth month showed its moral superiority in milk production and recorded 442.50 kg/ cow compared to the control treatment T1, which recorded the lowest milk production per month and total amounted to 202.50 kg/ cow, while the rest of the months there were no significant differences between the treatment, and it is noted in the quality of the amount of fat in the milk a cow, compared to the T3 treatment with a Nano selenium dose, which recorded the lowest amount of fat in milk at 3.01 and 6.50 kg/ cow, respectively, and there were no significant differences between the coefficients in the rest of the qualities Based on the 4% fat-modified milk and the amount of protein in the milk, we conclude from the current study that the addition of vitamin E in the amount of 3000 IU per cow per day had a positive role in improving milk production for cows .